C43/100
BELVIDERE — Water Quality Report 2026
Serving 25,070 people · Illinois
Water Source
Groundwater
County
—
System ID
IL0070050
Violations
22
Contaminant Test Results
1 contaminant above EPA health goals
| Contaminant | Detected | Limit (MCL) | Status |
|---|---|---|---|
Lead (90th percentile) | 0.002 mg/L | 0.015 mg/L | Above Goal |
EPA Violation History
1
Violation (last 5yr)
1
Unresolved
0
Health-Related
TIER 3Unresolved
Surface water treatment technique failure
Understanding violation severity
Tier 1Urgent health risk. Utility must notify all customers within 24 hours.Tier 2Important health or treatment issue. Customers notified within 30 days.Tier 3Administrative or monitoring issue. Reported in the annual water quality report.
Source: EPA Safe Drinking Water Information System (SDWIS) · Updated quarterly
Frequently Asked Questions About BELVIDERE
Is BELVIDERE water safe to drink?
BELVIDERE water receives a grade of C (43/100), which is considered fair. 0 contaminant(s) exceed EPA legal limits and 22 violation(s) are on record. Customers may want to consider using a water filter.
What contaminants has BELVIDERE detected?
63 contaminants were tested in BELVIDERE's water. Notable contaminants include Lead (90th percentile). No contaminants exceed EPA legal limits. 1 exceed EPA health goals (MCLGs).
Does BELVIDERE have any EPA violations?
Yes, BELVIDERE has 22 EPA violation(s) on record, with the most recent in 2025. Violation types include Other, MR, MCL. 8 are health-based violations.
How many people does BELVIDERE serve?
BELVIDERE serves approximately 25,070 people, Illinois. The system provides water to 1 community: Belvidere.
What type of water does BELVIDERE provide?
BELVIDERE sources its water from groundwater. Groundwater is pumped from underground aquifers, which often provides natural filtration. The utility's system ID is IL0070050.
How does BELVIDERE compare to other utilities in Illinois?
BELVIDERE scores 43/100 with a grade of C (fair). This score indicates room for improvement compared to other utilities. Visit our Illinois state page for a full comparison of water systems.